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Cardiovagal and adrenergic function tests in unilateral carotid artery stenosis patients-a Valsalva manoeuvre tool to show an autonomic dysfunction?
- Source :
-
Wiener klinische Wochenschrift [Wien Klin Wochenschr] 2016 Jul; Vol. 128 (13-14), pp. 504-12. Date of Electronic Publication: 2016 Mar 15. - Publication Year :
- 2016
-
Abstract
- Background: The stability of an arterial baroreflex depends also upon the integrity of the afferent limb. For its quantification, we can use a noninvasive test such as baroreceptor sensitivity estimation during Valsalva manoeuvre. The aim of this study was to evaluate potential autonomic dysfunction in patients with unilateral severe carotid disease and compare the results to the results obtained from an age and gender matched group of healthy volunteers.<br />Methods: We evaluated dynamic changes during Valsalva manoeuvre (Valsalva ratio, cardiovagal and adrenergic baroreceptor sensitivity, sympathetic indexes and its dynamic ranges) in 41 patients (29 males; 62.9 ± 7.4 years) and compared the results to results obtained from volunteers (62.8 ± 7.0 years).<br />Results: Valsalva ratio between the patients and control group revealed no significant difference, as well as cardiovagal and adrenergic baroreceptor sensitivity. Sympathetic indexes, except for sympathetic index 2, reflecting the sympathetic vasoconstrictor baroreceptor response in late phase 2 of Valsalva manoeuvre (7.1 ± 13.1 mmHg in patients vs. 11.4 ± 10.2 mmHg in control group; p = 0.012) showed no significant differences between the studied groups. The most prominent dynamic range between the groups was within the sympathetic index 2.<br />Conclusion: With some Valsalva manoeuvre test results, we were not able to show severe autonomic dysfunction in unilateral severe carotid stenosis patients except for lower vasoconstriction response within the late phase 2 of the manoeuvre.
- Subjects :
- Autonomic Nervous System Diseases complications
Autonomic Nervous System Diseases diagnosis
Carotid Sinus drug effects
Carotid Sinus physiopathology
Carotid Stenosis complications
Carotid Stenosis diagnosis
Female
Humans
Male
Middle Aged
Reproducibility of Results
Sensitivity and Specificity
Adrenergic Agents administration & dosage
Autonomic Nervous System Diseases physiopathology
Baroreflex
Blood Pressure
Carotid Stenosis physiopathology
Valsalva Maneuver
Subjects
Details
- Language :
- English
- ISSN :
- 1613-7671
- Volume :
- 128
- Issue :
- 13-14
- Database :
- MEDLINE
- Journal :
- Wiener klinische Wochenschrift
- Publication Type :
- Academic Journal
- Accession number :
- 26980215
- Full Text :
- https://doi.org/10.1007/s00508-016-0980-2